 In February 2004, the Union of Concerned Scientists published a report accusing the Bush administration of manipulating science for political purposes, listing more than 20 alleged incidents of censoring scientific results or applying a litmus test in the appointment of supposedly scientific advisory panel members.In April 2004, Marburger published a statement rebutting the report and exposing errors and incomplete explanations in it, and stating that "even when the science is clear—and often it is not—it is but one input into the policy process," but "in this Administration, science strongly informs policy.